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Finding the Fourth Proportional to 659,813.60, 891,448.20 and 659,813.60

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Solution

The fourth proportional to 659,813.60, 891,448.20 and 659,813.60 is: 891,448.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,813.60 : 891,448.20 = 659,813.60 : x
  2. Step 2: Convert to fraction form
    659,813.60/891,448.20 = 659,813.60/x
  3. Step 3: Cross multiply
    659,813.60x = 891,448.20 × 659,813.60
  4. Step 4: Simplify right side
    659,813.60x = 588,189,646,055.52
  5. Step 5: Solve for x
    x = 588,189,646,055.52/659,813.60
  6. Step 6: Final answer
    x = 891,448.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.